: Pneumatics Brass Hex Nipples are manufactured with threads that confirm to the American Taper Threads and have a good resistance to vibration and movement. Thicker walls and longer lengths provides a professional design. Specifications: Threads: 1" NPT Male - Machined (Provides seal tight threads) Temperature Range: -65 °F to 250 °F Operating Pressure: 1000 PSI Conformance: ASME, SAE, NPT Material: Brass - Excellent strength & ductility, corrosion resistance, good bearing properties, low magnetic permeability TOOLMARTS PAYMENT METHODS, SHIPPING AND REFUND POLICIES About Toolmarts has been a factory direct distributor of power tools, accessories, fittings and shop machinery since 1986.